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4 years ago

How do you identify y=x-7 and 3x+y=5

1 answer:

6 0

For the first one your answer would be y=7x because there is no number to subtract from it so it would automatically be 7x. And the second one will be 2y

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find 3 consecutive even integers such that the sum of the smaller 2 is 6 less than twice the largest one

saw5 [17]

n, n + 2, n + 4 - three consecutive even integers

n + 2 = 2(n + 4) - 6 |use distributive property

n + 2 = (2)(n) + (2)(4) - 6

n + 2 = 2n + 8 - 6

n + 2 = 2n + 2 |subtract 2 from both sides

n = 2n |subtract 2n from both sides

-n = 0

n = 0

n + 2 = 0 + 2 = 2

n + 4 = 0 + 4 = 4

Answer: 0, 2, 4.

6 0

4 years ago

Write the decimal as a fraction or a mixed number in simplest form

natka813 [3]

-0.258 is a decimal number in which 2 is at the tenth place, 5 is at the hundredth place and 8 is at the thousandth place.

Therefore, the number in the fraction form is - $-\frac{258}{1000}$

The fraction in the simplest form is - $-\frac{129}{500}$

-0.312 is a decimal number and its fraction form is - $-\frac{312}{1000}$

The fraction in the simplest form is $-\frac{78}{250} =-\frac{39}{125}$

-2.32 is a decimal number and its fraction in the simplest form is

$-2\frac{32}{100} =-2\frac{8}{25}$

-1.64 is a decimal number and its mixed number in the simplest form is $-1\frac{64}{100} =-1\frac{16}{25}$

6.012 is a decimal number and the number in mixed number form is $6\frac{12}{1000}=6\frac{3}{250}$

-12.405 is a decimal number and the number in mixed number form is

$-12\frac{405}{1000}=-12\frac{81}{200}$

6 0

3 years ago

Which expression is equivalent to 9x – 2x2 + 4x – x?

Artyom0805 [142]

Answer:

-2x^2+12x

Step-by-step explanation:

5 0

3 years ago

Can anybody help me out here it’s pre alegbra

lora16 [44]

Answer:

15 km

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2 + b^2 = c^2

Draw a triangle with 12 for x direction and 9 for y direction

The distance is the connecting line which is the hypotenuse

12^2 + 9^2 = c^2

144+81 = c^2

225 = c^2

Taking the square root of each side

sqrt(225) = sqrt(c^2)

15 =c

5 0

3 years ago

Read 2 more answers

Jenna bought 280 tropical fish for a museum display. She bought 4 times as many tigerfish as parrotfish. How many of each type o

KengaRu [80]

Answer:

Parrot fish = 56

Tigerfish = 224

Step-by-step explanation:

4p + p = 280

5p = 280

p = 56

t = 4 (56) = 224

5 0

4 years ago